Hello there,
Greetings,
I have gone through with your job post and understand that you are looking for a developer for your open cart website and you wish to have a payment gateway in it. I am excited to assure you that I can assist you in the job. I am having 14+ years of experience in web development. I can help you to build this. I also have a huge experience working with Html, CSS, Php, Cake Php, CMS, Yii, Opencart, Laravel, CI etc also experienced in SEO (On-Page or Off-Page).
Please note: Time and cost estimate will be shared once the final discussion about the scope of work will be done.
Looking forward to working with you.
Regards,